<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>99乘法表</title>
</head>

<body>
    <div id="table">
        "<table>
            <tr>
                <tb></tb>
            </tr>
        </table>"

    </div>
    <script>
        var str = '<table>';
        for (var i = 1; i < 10; ++i) {
            str += '<tr>';
            for (var j = 1; j <= i; ++j) {
                str += '<td>' + j + 'x' + i + '=' + (j * i) + '</td>';
            }
            str += '</tr>';
        }
        str += '</table>';
        document.getElementById('table').innerHTML = str;
    </script>
</body>
<script>
    // for (i = 1; i <= 9; i++) {
    //     for (j = 1; j <= 9; j++) {
    //         document.write(i + "*" + j + "=" + i * j + "&nbsp;");

    //         if (i == j) { document.write("<br/>"); break; }  //用的if语句，如果这两个数字相同了 那么跳出，另起一行
    //     }

    // }
</script>

<ml>